When Is the Complement of the Comaximal Graph of a Commutative Ring Planar?

S. Visweswaran, Jaydeep Parejiya
2014 ISRN Algebra  
Let R be a commutative ring with identity. In this paper we classify rings R such that the complement of comaximal graph of R is planar. We also consider the subgraph of the complement of comaximal graph of R induced on the set S of all nonunits of R with the property that each element of S is not in the Jacobson radical of R and classify rings R such that this subgraph is planar.
doi:10.1155/2014/736043 fatcat:v5sadqrovjcf7b2k6s7twct2de